Horton
Menu

Re: [HACKERS] Re: v7.1b4 bad performance

Bruce Momjian <pgman@candle.pha.pa.us>

View thread
From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Tatsuo Ishii <t-ishii@sra.co.jp>
Cc: tgl@sss.pgh.pa.us, peter.schmidt@prismedia.com, pgsql-hackers@postgresql.org, pgsql-admin@postgresql.org
Date: 2001-02-19T16:50:02Z
Lists: pgsql-hackers 
I did not realize how much WAL improved performance when using fsync.

> > "Schmidt, Peter" <peter.schmidt@prismedia.com> writes:
> > > So, is it OK to use commit_delay=0?
> > 
> > Certainly.  In fact, I think that's about to become the default ;-)
> 
> I agree with Tom. I did some benchmarking tests using pgbench for a
> computer magazine in Japan. I got a almost equal or better result for
> 7.1 than 7.0.3 if commit_delay=0. See included png file.
> --
> Tatsuo Ishii

[ Attachment, skipping... ]


-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026